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Florida Erosion and Sediment Control Inspector's Manual Phase Thisis the first construction related activity to occur on any site . Installation of initial controls shall be discussed at the pre-construction conference . The contractor and the inspector should. understand the inspection and maintenance requirements of the specified BMPs , as well as the location and proper installation procedures . Offsite runoff should be diverted around. the project if stabilized areas , adequate conveyance, andlor protected inlets are available. Sediment traps and basins should be built to receive the anticipated runoff and sediments. A temporary sediment basin in the location of the permanent stormwater facility makes efficient use of space and simplifies future tasks . Perimeter controls and diversions must be installed to keep.-sediments onsite and directed to the traps and. basins ... As clearing and grading progresses , temporary seeding and mulching should follow immediately for areas which will not be worked for a period of. seven days or more : Phase This phase is the interim phase of the project. The permanent stormwater management system is constructed in conjunction with the other ' construction activities. Before runoff is directed into it, the system must be properly stabilized . Additionally it must be protected from sedimentation until completion of the project. As the stormwater facilities are constructed , they should also be kept free of sediments. Special care must betaken -if stormwateeponds are used astemporary . sediment basins to ensure complete removal - of accumulated sediments which would 'reduce stormwater storage volume and cause premature clogging. If . possible , design and excavate the sediment basin bottom 6" to 12" (15 - 30 cm) higher thanthe eventual pond bottom . Land disturbance should occur only in areas : which are being actively worked_ .Graded. areas should be seeded and mulched immediately if they will not be worked for a period of seven days or more. A regular maintenance program should insure inspection and maintenance of BMPs by the contractor weekly andlor after significant rain, events . Any failures should be analyzed to prevent recurrence. Substantial changes to the approved plan must, be . made or reviewed by the designer and approved by the appropriate - . regulatory agency. Phase III This is the. completed. project. The entire stormwater management system should be built according to the- approved plans. Substantial deviations from the plan may require revisions by the design professional, reapproval by the regulatory agency, and/br . reconstruction by the contractor. The system must, also function as designed and in compliance with applicable regulatory criteria. Any previously unforeseen activities which could compromise the function or maintainability of the system should be addressed immediately. 42